Scientists are buzzing (again!) about gravitational waves and what a big deal they are. Wait! Don’t be embarrassed if it all leaves you confused and you just can’t share their excitement. Here's your guide to gravitational waves, short and simple as ABC.

So here's what happened: researchers at Montana State University have an update from the LIGO observatory on their progress in detecting gravitational waves. It is one of the biggest mysteries of the past 100 years that we inherited from Albert Einstein.

And even LIGO makes mistakes! In 2010, it was fooled by a fake signal... from scientists. However, six years ago it wasn't as advanced as now, so let's not count that one.

8. We almost caught the gravity waves in 2014, but not quite. It was a false alarm, again.

BICEP2, an observatory in Antarctica, right near the South Pole, thought it had netted the evidence for gravitational waves from the dawn of our universe, but no.

If you still do not quite get what is happening, it's OK. First, it's a VERY short guide to a mystery as old as our universe. Second, scientists have been looking into it for 100 years since Einstein (so, add the time he spent, too!) and they are not there yet.